Should I put a shade covering over my air conditioner?

What size of cooling and heating system should I have?

How is the efficiency of heating and cooling equipment measured and rated?

How long should my system run for when it comes on?

How can I increase the efficiency and the service life of my home's heating and cooling systems?

Is a bigger system with more capacity better?

How are the sizing capacities of heating and cooling systems measured?

What air temperature should my air conditioner produce?

What temperature should I set my thermostat?

What are the advantages of a programmable thermostat?

How often should I replace my filters?

What maintenance can I do on my air conditioner?

How often should I have maintenance done on my air conditioner?

Is there anything I should check prior to calling for service?

How much does it cost to replace a heating and cooling system?

Should I try to keep my system from running too much?

Are there any air conditioning systems that are safer for the environment?

Should I close the registers and doors to areas of the home that are rarely used?

Why are humidifiers used with heaters but not air conditioning?

During the heating season, my heat pump delivers warm air, but not hot air, and will operate for long periods of time. Is that considered normal?

During the heating season, my heat pump makes a "whooshing" sound and I feel cool air coming from the supply registers. Is that considered normal?

How do I know if my A/C unit is big enough?